AP Biology - Cellular Respiration

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.

Front

What is the main purpose of glycolysis?

Back

The main purpose of glycolysis is to break down glucose into pyruvate, producing a small amount of ATP and NADH in the process.

Front

What are the three main stages of cellular respiration?

Back

The three main stages of cellular respiration are Glycolysis, the Krebs Cycle (Citric Acid Cycle), and Oxidative Phosphorylation.

Front

What is the role of NADH and FADH2 in cellular respiration?

Back

NADH and FADH2 are electron carriers that transfer high-energy electrons to the electron transport chain, driving ATP production.

Front

What is oxidative phosphorylation?

Back

Oxidative phosphorylation is the final stage of cellular respiration where ATP is produced using energy from electrons transferred through the electron transport chain.

Front

What is chemiosmosis?

Back

Chemiosmosis is the process of using a proton gradient to drive ATP synthesis via ATP synthase.

Front

What is the significance of oxygen in cellular respiration?

Back

Oxygen acts as the final electron acceptor in the electron transport chain, allowing for the continuation of aerobic respiration.

Front

What is the difference between aerobic and anaerobic respiration?

Back

Aerobic respiration requires oxygen and produces more ATP, while anaerobic respiration occurs without oxygen and produces less ATP.

Front

What is the Krebs Cycle?

Back

The Krebs Cycle, also known as the Citric Acid Cycle, is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetyl-CoA.

Front

What is substrate-level phosphorylation?

Back

Substrate-level phosphorylation is the direct transfer of a phosphate group to ADP to form ATP during glycolysis and the Krebs Cycle.